Rączki was formerly part of the German Empire. In the German Empire, the place was called Hornheim.
The place is now called Rączki and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Rontzken | German Empire | Neidenburg | 1938 |
| Hornheim | German Empire | Neidenburg | 1939 |
| Rączki | Under Polish administration | Nidzica | 1945 |
| Rączki | Poland | Olsztyn | 1992 |